VOLTCRAFT DPPS-60-8 Operating Instructions Manual

Type
Operating Instructions Manual
39
1. Introduction ..........................................................................................................................40
2. Intended Use ........................................................................................................................41
3. Delivery content ...................................................................................................................42
4. Symbol explanation ..............................................................................................................43
5. Safety instructions ................................................................................................................44
a) Persons / Product ...........................................................................................................44
b) Miscellaneous .................................................................................................................46
6. Operating elements ..............................................................................................................46
7. Start-up ................................................................................................................................48
a) Connecting the power cable ...........................................................................................48
b) Unit installation................................................................................................................48
c) General informations.......................................................................................................48
8. Normal Operation .................................................................................................................50
a) Set current limitation .......................................................................................................50
b) Set output voltage ...........................................................................................................51
c) Connecting a load ...........................................................................................................51
9. Memory Slot Operation “Preset” and “Set” ...........................................................................53
a) Assigning memory slots with “Set” ................................................................................54
b) Reset to memory slots to default settings .......................................................................54
10. Remote Control Operation “Remote Ctrl” .............................................................................55
a) Preparation of the remote control connection .................................................................55
b) Control through external voltage source .........................................................................56
c) Control through a controllable resistance (poti) ..............................................................57
d) Remote-control output (on/off) ........................................................................................58
11. Sense function (1086562) ....................................................................................................59
12. Software installation .............................................................................................................60
13. Control with the PC software ................................................................................................60
a) Operating elements of the software and the basic operation..........................................61
b) Internal preset memory ...................................................................................................63
c) Data log...........................................................................................................................64
d) Setting .............................................................................................................................65
14. Protective measures ............................................................................................................66
a) Over-voltage protection...................................................................................................66
b) Overheating protection....................................................................................................66
c) Overload protection.........................................................................................................67
15. Maintenance and cleaning ...................................................................................................67
a) Exchanging the fuse .......................................................................................................67
16. Troubleshooting ....................................................................................................................68
17. Disposal ...............................................................................................................................69
18. Technical data ......................................................................................................................70
19. Added functions ...................................................................................................................73
a) Zeroing the unit manually................................................................................................73
b) Resetting output presets (P1/P2/P3) to factory default values ......................................74
CONTENTS
<English-start>
40
1. INTRODUCTION
Dear Customer,
In purchasing this Voltcraft® product, you have made a very good decision for which we would like
to thank you.
Voltcraft® - In the eld of measuring, charging and network technology, this name stands for
high-quality products which perform superbly and which are created by experts whose concern is
continuous innovation.
From the ambitious hobby electronics enthusiast to the professional user, products from the Voltcraft®
brand family provide the optimum solution even for the most demanding tasks. And the remarkable
feature is: we offer you the mature technology and reliable quality of our Voltcraft® products at
an almost unbeatable price-performance ratio. In this way, we aim to establish a long, fruitful and
successful co-operation with our customers.
We wish you a great deal of enjoyment with your new Voltcraft® product!
All names of companies and products are trademarks of the respective owner. All rights
reserved.
If there are any technical questions, please contact:
International: www.conrad.com/contact
United Kingdom: www.conrad-electronic.co.uk/contact
41
2. INTENDED USE
The laboratory power unit serves as a potential-free DC voltage source to operate low-voltage
consumers. The adjustable output can be tapped with up to 5 A at the front and up to the full nominal
current at the back. The front output is limited to 5 A and protected against overload. When switching
the outputs of several power supplies in series, voltages of >75 V/DC, which are dangerous to touch,
may be generated. This is why insulated lines/measuring cables must be used for safety reasons for
voltages above this. Connection on the front is performed with 4 mm safety sockets, on the back with
high-current socket screw connectors. The outputs (front and back) are connected to each other.
The connection cables used must be large enough. Where the conductor section
is too small, overheating and re may result.
The output data of the laboratory measuring devices is as follows:
Type Output voltage Output current
(Total, MAIN + AUX)
DPPS-16-30 1 – 16 V/DC 0 – 30 A
DPPS-32-15 1 – 32 V/DC 0 – 15 A
DPPS-60-8 1 – 60 V/DC 0 – 8 A
DPPS-16-40 1 – 16 V/DC 0 – 40 A
DPPS-32-20 1 – 32 V/DC 0 – 20 A
DPPS-60-10 1 – 60 V/DC 0 – 10 A
DPPS-16-60 1 – 16 V/DC 0 – 60 A
DPPS-32-30 1 – 32 V/DC 0 – 30 A
DPPS-60-15 1 – 60 V/DC 0 – 15 A
Current and voltage can be set continually through digital rotary controls using coarse and ne
settings in order to allow fast and precise value settings. The values are displayed on the structured
LC display. A power limit for constant power operation can be pre-set without a shorting bar.
The power unit can be remote-controlled. An external voltage (0 - 5 V/DC) or external potentiometer
(5 kOhm) can be used to set the output voltage and output current. The DC output is turned on and
off via the a switching contact.
Three freely programmable memory slots can be assigned to different xed voltages and current
limitations. The selection switch is located at the back of the device.
42
With the software included and the USB connection, the power supply can be controlled by a personal
computer for running cyclical operations. Up to 20 programmable sets of voltage and current at
different time durations can be programmed into the operation and the cyclical operations can be
repeated up to 999 times.
The device is overload- and short-circuit-proof and contains a safety temperature cut-off. The
laboratory power unit is designed in compliance with protection class 1. It is only approved for
connection to shockproof sockets with protective grounding and an alternating current of 230 V/AC
commonly used in households.
Unauthorised conversion and/or modication of the device are inadmissible because of safety and
approval reasons (CE). Any usage other than described above is not permitted and can damage the
product and lead to associated risks such as short-circuit, re, electric shock, etc. Please read the
operating instructions thoroughly and keep them for further reference.
Observe all safety instructions and information within this operating manual.
3. DELIVERY CONTENT
Laboratory power supply
Remote connection socket
Power cable with grounding contact
USB cable
CD (software)
Operating instructions
Up-to-date Operating Instructions:
1. Open www.conrad.com/downloads in a browser or scan the displayed
QR code.
2. Select document type and language and enter the item number into
the search eld. After submitting the query you can download displayed
records.
43
4. SYMBOL EXPLANATION
An exclamation mark in a triangle indicates important instructions in this operating manual
which absolutely have to be observed.
The triangle containing a lightning symbol warns of danger of an electric shock or of the
impairment of the electrical safety of the device.
The symbol can be found when you are to be given tips and information on operation.
Only to be used in dry indoor areas.
This product has been CE-tested and meets the required European guidelines.
Grounding wire connection; this screw may not be loosened.
44
5. SAFETY INSTRUCTIONS
Read the operating instructions carefully and especially observe the safety
information. If you do not follow the safety instructions and information on proper
handling in this manual, we assume no liability for any resulting personal injury or
damage to property. Such cases will invalidate the warranty/guarantee.
a) Persons / Product
The device is not a toy. Keep it out of the reach of children and pets.
Do not leave packaging material lying around carelessly. These may become
dangerous playing material for children.
Protect the product from extreme temperatures, direct sunlight, strong jolts, high
humidity, moisture, ammable gases, vapours and solvents.
Do not place the product under any mechanical stress.
If it is no longer possible to operate the product safely, take it out of operation and
protect it from any accidental use. Safe operation can no longer be guaranteed if the
product:
- is visibly damaged,
- is no longer working properly,
- has been stored for extended periods in poor ambient conditions or
- has been subjected to any serious transport-related stresses.
Please handle the product carefully. Jolts, impacts or a fall even from a low height can
damage the product.
Also observe the safety and operating instructions of any other devices which are
connected to the product.
Products operated using the mains voltage must be kept out of the reach of children.
For this reason, be particularly careful when using the product in the presence of
children. They may try to stick objects into the device through openings in the housing.
This poses a risk of death by electric shock.
Never pour liquids over electrical appliances and never leave objects lled with liquids
(e.g. vases) on it or in the vicinity. There is a high risk of re or life-threatening electric
shock.
Operate the product in dry interior spaces only. It must not get damp or wet. Otherwise
there is a risk of a life-threatening electric shock!
In schools, training facilities, hobby or self-service workshops, handling of electrical
devices must be monitored by trained personnel.
When operating on commercial premises, the relevant accident prevention regulations
of workers’ compensation boards for electrical equipment must be observed.
Live parts may become exposed when opening covers or removing parts. You must
therefore disconnect the product from all power sources before performing any
maintenance or repairs. Capacitors in the device can still carry a charge even if the
device has been disconnected from all voltage sources.
45
Always lay the cables so that nobody can trip over or become entangled in them. This
poses a risk of injury.
When working with power supplies or chargers, do not wear any metallic or conductive
chains, bracelets, rings etc. Never connect the power supply or charger with humans
or animals.
Check the product for damage(s) each time before use. If you discover any damages,
do not use the product. Disconnect the power supply and unplug the mains adapter
from the wall outlet. Then bring the product to a specialised workshop.
Use only a proper mains socket (230V~/50Hz) connected to the public power supply.
The mains outlet must be located near to the device and be easily accessible.
Do not touch the mains cable if it is damaged. First, power down the respective mains
socket (e.g. via the respective circuit breaker) and then carefully pull the mains plug
from the mains socket. Never use the product if the mains cable is damaged.
A damaged mains cable may only be replaced by the manufacturer, a workshop
commissioned by the manufacturer or a similarly qualied person, so as to prevent any
danger.
Never plug in or unplug the mains plug when your hands are wet.
Do not pull the mains adapter out of the wall outlet by its cable!
The plug must be pulled out of the socket under the following conditions:
- before cleaning the product
- during a thunder storm
- if the product is not being used over a long period.
Make sure that the product is provided with adequate ventilation during operation. Do
not cover the ventilation openings with magazines, blankets, curtains or similar. Keep a
minimum distance of approx. 15 cm from other objects.
When setting up the product, make sure that the cable is not pinched, kinked or
damaged by sharp edges.
Make sure there are no devices with strong electric or magnetic elds such as
transformers, motors, cordless telephones and radio-controlled devices in the vicinity
of the product as these can inuence the product.
Do not operate the product in places or rooms with unfavourable ambient conditions.
This can damage the sensitive electronics found inside the product and can potentially
pose life-threatening risks. Poor ambient conditions are:
- High humidity (> 80 % relative, condensation)
- Humidity, dust, ammable gases, solvent vapours, benzine
- High ambient temperatures (> approx. +50 ºC)
- Electromagnetic elds (motors, transformers, audio systems for model building etc.)
or electrostatic elds
46
The product should not be used immediately after it has been brought from an area
of cold temperature to an area of warm temperature. Condensed water might destroy
the product. Wait until the product adapts to the new ambient temperature before use.
b) Miscellaneous
Consult an expert when in doubt about operation, safety or connection of the device.
Maintenance, modications and repairs are to be performed exclusively by an expert
or at a qualied shop.
If you are not sure about the correct connection or use, or if questions arise which
are not covered by these operating instructions, please do not hesitate to contact our
technical support or another qualied specialist.
6. OPERATING ELEMENTS
1. LED panel meter display with C.V. (Constant voltage) and C.C (Constant current) indicator
2. Control indicator REAR CONTROL (Control over rear side)
3. Control knob VOLTAGE (Output voltage)
4. Control knob CURRENT (Output current)
5. On/Off switch POWER (on/off)
6. Terminals AUX. OUTPUT 5A MAX. (Auxiliary output terminals)
7. Terminals MAIN OUTPUT (Output terminals)
8. Selection switch MODE (Mode selection)
9. Selection switch RECALL (Recall)
10. Remote control terminal Remote Control
11. Cooling fan protective grille
12. Power input and fuse
13. USB port
14. Terminals SENSE (Sensor terminals)
48
7. START-UP
The laboratory power unit is not a charger. To charge batteries, use suitable
chargers with a charging current cut-off.
During a longer period of operation under nominal load, the surface of the housing
will heat up. Attention! Risk of burns! Therefore, make sure that there is adequate
ventilation of the power unit and never operate it partly or fully covered to avoid
any damage.
When connecting a consumer, ensure that it is not connected when switched on.
A switched-on consumer can result in sparks when connecting to the output
terminals of the power unit, which in turn can damage the sockets or the connected
cables and/or their clamps.
If your power unit is not required, switch it off and disconnect it from the mains.
The displays remain on for a few seconds after it is switched off to unload the
internal capacitors and to store the last parameters that were set.
Always ensure a sufcient conductor cross-section for the DC connection lines,
since overload may cause re in the line.
a) Connecting the power cable
1. Connect the supplied grounding mains cable to the power input (12) on the power unit. Ensure
a tight t.
2. Connect the power cable to a shockproof mains socket with protective grounding. The maximum
length of the power cable to the outlet must not exceed 3 m.
b) Unit installation
Place the laboratory power unit on a stable, level and robust surface. Make sure that ventilation slots
in the casing are not covered up.
c) General informations
The laboratory power unit is micro-processor-controlled and is operated through two digital controls
(incremental encoders without end position) with sensor function. This enables ne and coarse control
via a control.
49
After the device switches on, a system check is performed. The test status is displayed on the two
displays. The displays are in the following order:
Display of the current software state.
Segment test to determine if the display works with
all its individual segments.
Then the LED displays C.V., C.C. and REAR
CONTROL are tested.
System test of the protective measures starts.
The over-voltage protection is tested.
The over-load protection is tested.
The over-temperature protection is tested.
Fan test The fan is shortly tested throughout the
speed range.
For a short time, the fan speed increases audibly.
The remote control function for “output out” is
tested.
After this step, the device switches to the regular
operating display mode.
50
The power unit enables operation in 4 modes. These modes are selected by the selection switch
MODE (8) slider on the back. The following modes are possible:
Normal Normal operation. Voltage and current are adjusted on the front.
Preset Memory slot operation Three xed voltages can be stored in the device and
directly selected through this Preset function. The memory slot is selected with
the selection switch RECALL (9). The front controls are inactive.
Remote Ctrl Remote control operation. The power unit can be remote-controlled via
an external voltage or external potentiometer. The remote settings can be
performed for voltage and current. The front controls are inactive.
Set Settings operation. The three preset slots can be programmed freely. Select the
memory slot with the selection switch RECALL (9) and make the settings using
the control knobs (3, 4).
The separate operating modes are described in more detail in the following.
8. NORMAL OPERATION
In normal operation, the power unit can be operated through the front
controls. Ensure that the selection switch MODE is in the Normal position.
Remove any connected consumers from output (6 or 7).
Switch on the power unit at the On/Off switch POWER (5). The display (1)
lights up, and after a short self test, the current and voltage displays appear.
Set the current limitation before setting any voltages. If the current value is too high, your
connection lines can be damaged; if it is too low (<1 A), the output voltage can be limited.
a) Set current limitation
Limiting the output current is a protection mechanism to protect the consumer or connection cables.
Current limitation can be pre-set at the output without any short circuit. The power unit then supplies
the maximum current set.
1. Remove any connected consumers from the power unit.
2. Switch on the power unit at the On/Off switch POWER (5). The display (1) lights up, and after a
short self test, the current and voltage displays appear.
3. Set the current limitation at the control knob CURRENT (4) according to your application.
4. Turn the control and a current limitation value appears.
51
Where no setting is made within 2 seconds, the display switches back to the current
current display.
5. Turn the control to the left or right to set the current limitation. After switching on, the ne settings
area (0.1 A) is always active. This is indicated by a slightly lighter digit. Press the rotary control
slightly from the front. The decimal position (1.0 or 0.1) of the setting range changes each time you
press. Turning changes the value.
6. Settings can be made coarsely (whole numbers) or ne (by tenths).
7. Where the desired current value was set, the display switches back to normal display after 2 seconds.
If the preset current is reached in normal operation, the power unit switches to current limitation
mode and reduces the voltage value. This operation is signalled with the red status display
C.C. (1).
b) Set output voltage
The output voltage can be set at the control knob VOLTAGE (3) control. The coarse and ne control
is performed in the same way as for setting the current limitation.
With the large control range, it is possible that the voltage setting takes approx.
1- 2 seconds to switch from a high to a low voltage value.
In normal mode the device operates in constant voltage mode. This means that the power
unit emits a constant, preset output voltage. This operation is indicated with a green status
LED C.V. (1).
c) Connecting a load
When connecting a consumer, make sure that it is connected to the power unit when
switched off. The maximum current consumption of the device to be connected
must not exceed the capacity indicated in the technical specications.
For serial connection of the outputs with several power supplies, the resulting
voltages can be fatal on contact (> 75 V/DC). As of this voltage, you may only use
insulated accessories.
Avoid the use of non-insulated metallic cables and contacts. All these exposed
areas must be covered with suitable, ame-resistant insulation materials or by other
measures and be protected from direct contact and short circuits.
Ensure a sufcient cable diameter for the intended current.
The power unit has two outputs. These outputs always have the same output voltage. The difference,
however, is in the current carrying capacity.
52
Max. 5 A shall be tapped at the terminals AUX. OUTPUT 5A MAX. (6).
A PTC overcurrent protection protects those terminals against overloading and
interrupts the current supply when triggered (>5 A). To reset the unit, immediately
turn it off and let it cool down to room temperature before using it again.
The terminals MAIN OUTPUT (screw sockets) (7) on the back are indicated for full
nominal current. From an output current of 5 A, the screw clamp function of the rear
sockets is recommended to avoid overheating of the plug sockets.
1. Remove any connected consumers from the output.
2. Switch on the power unit at the On/Off switch POWER (5). The operating display (1) lights up and
the current and voltage display appears on the display.
3. Set the parameters according to your specications as described in the chapter “Start-Up”.
4. Check once more that the correct output voltage is set.
5. Connect the plus pole (+) of the consumer with the red socket “+” and the minus pole (-) of the
consumer with the black socket “-” of the respective output (front = AUX. OUTPUT 5A MAX. (6),
rear = MAIN OUTPUT (7)).
Now you can switch on the connected consumer.
The current consumption of the connected consumer is displayed in Ampere (A) in the display (1).
53
9. MEMORY SLOT OPERATION “PRESET” AND “SET”
Three xed voltages, including current settings, can be stored in the device with the Set function and
directly selected through the Preset function.
Ex works, all three memory slots (P1, P2, P3) are preset.
They are assigned as follows:
Memory
Type
P1 P2 P3
Voltage Current Voltage Current Voltage Current
DPPS-16-30 5 V Maximum 13.8 V Maximum 15 V Maximum
DPPS-32-15 5 V Maximum 13.8 V Maximum 25 V Maximum
DPPS-60-8 5 V Maximum 13.8 V Maximum 55 V Maximum
DPPS-16-40 5 V Maximum 13.8 V Maximum 15 V Maximum
DPPS-32-20 5 V Maximum 13.8 V Maximum 25 V Maximum
DPPS-60-10 5 V Maximum 13.8 V Maximum 55 V Maximum
DPPS-16-60 5 V Maximum 13.8 V Maximum 15 V Maximum
DPPS-32-30 5 V Maximum 13.8 V Maximum 25 V Maximum
DPPS-60-15 5 V Maximum 13.8 V Maximum 55 V Maximum
Make sure that no consumers are connected.
The memory can also be set via the software provided, check the chapter “Control with the
PC software”.
1. Activate the Preset function through the selection switch MODE (8) on the rear.
2. Put the switch in the Preset position. The front LED
indicator REAR CONTROL (2) lights up. The front
control knobs are now inactive.
3. Select the respective memory slot P1, P2 or P3 on
the rear selection switch RECALL (9). The
respective
output voltage is indicated on the display (1).
4. Now you can connect and switch on the consumer.
2
3
54
5. For deactivating the xed voltage function, slide the selection switch MODE (8) back to the Normal
position. The control indicator REAR CONTROL (2) goes out. The device switches back to normal
power unit operation (always remove DC consumers before!).
a) Assigning memory slots with “Set”
All three memory slots can be assigned user-specic values for output voltage and current limitation.
Make sure that no consumers are connected.
1. Activate the Set function through the MODE (8)
slider on the rear. Put the switch in the Set position.
The front control indicator REAR CONTROL (2)
lights up. Select the respective memory slot P1,
P2 or P3 on the selection switch RECALL (9).
The respective values for current and voltage are
indicated on the display (1).
2. The front control knobs (3 and 4) can be used to
set the desired output voltage and current limitation.
3. If required, repeat these steps with the other memory slots.
4. When all parameters are set, slide the selection switch MODE (8) back to the Preset position for
xed voltage operation or to the Normal position for standard operation.
b) Reset to memory slots to default settings
1. Switch off the power unit.
2. Press the two rotary controls on the front at the same time and keep them pressed.
3. Switch on the power unit. When the displays light up, let go of both rotary controls. The default
settings for the parameters are active again.
2
3
55
10. REMOTE CONTROL OPERATION “REMOTE CTRL”
Through the built-in remote control terminal Remote control (10), the voltage and current can be
set through an external voltage source or an external adjustable resistance (short “poti”). The remote
control is connected on the remote control terminal Remote control (10). There is a remote socket
included for connection.
In remote-controlled operation, the current control path must also be connected,
since the output otherwise switches to the current limitation mode “C.C.” and limits
the output voltage.
a) Preparation of the remote control connection
1. Turn the lateral screw of the supplied socket and remove the front, black contact socket turning
it slightly.
2. Draw ve connecting cables with a conductor cross-section of at least 0.34mm
2
through the metal
sleeve from the rear. Carefully solder these cables to the soldering lugs nos.1, 2, 3, 4 and 5 of the
black contact socket. Ensure that no short circuits are created.
The numbers of the soldering lugs are indicated on the black insulator.
Mark the loose ends of the cables with the corresponding contact numbers (1-5) to avoid confusion.
Insert the black contact jack in the reverse order into the metal sleeve and screw them tight.
The contacts are assigned as follows:
Contact 1 Internal control voltage + 5 V/DC (<50 mA)
Contact 2 Voltage setting
Contact 3 Current setting
Contact 4 Reference ground (“Ground”)
Contact 5 Output on / off
Contact 6 – 8 Not assigned
56
b) Control through external voltage source
The power unit can be remote-controlled with an external voltage source from 0 to 5 V/DC throughout
the range for voltage and current.
Proceed as follows for connection:
Connect the connecting cables of the remote sockets as illustrated:
V
Voltage setting “V”
Connection 2 to the plus pole (+) of the
external control voltage.
Connection 4 to the minus pole (-) of the
external control voltage.
Current setting “I“:
Connection 3 to the plus pole (+) of the
external control volltage.
Connection 4 to the minus pole (-) of
the external control volltage
The voltage on the remote control connection must not exceed 5 V.
The connections must not be shorted.
1. Switch off the power unit and then connect the remote socket to the
remote control terminal Remote Control. Screw on the external
fastening ring.
2. Turn the voltage of the external voltage source to 0 V.
3. Switch on the power unit.
4. Put the selection switch MODE (8) on the rear into the Remote Ctrl
position. The control indicator REAR CONTROL (2) is lit.
5. The desired output value can now be set through the external voltage
source. Control the complete adjustment area for correct function. The
output voltage can be monitored in the display.
Short-circuit the rear terminals MAIN OUTPUT (7) with a sufciently thick cable for checking
the current control (at least 8 mm
2
). Check the entire setting for proper operation.
If this remote control function is no longer required, put the selection switch MODE (8) to the Normal
position.
57
c) Control through a controllable resistance (poti)
The power unit can be remote-controlled with an external poti (5 Kohm) throughout the range for
voltage and current.
Proceed as follows for connection:
Connect the connecting cables of the remote sockets as illustrated.
Voltage setting “V”
Connection 1 at one end of the
resistance.
Connection 2 at the centre sliding contact
of the resistance.
Connection 4 at the second end of the
resistance.
Current setting “I“:
Connection 1 at one end of the
resistance.
Connection 3 at the centre sliding
contact of the resistance.
Connection 4 at the second end of the
resitance.
Connections 1 and 4 must not be short-circuited.
1. Switch off the power unit and then connect the remote socket to the
remote control terminal Remote Control. Screw on the external
fastening ring.
2. Switch on the power unit.
3. Put the selection switch MODE (8) on the rear into the Remote Ctrl
position. The control indicator REAR CONTROL (2) is lit.
4. The desired output values can now be set through the external poti.
Control the complete adjustment area for correct function. The output
voltage can be monitored in the display.
Short-circuit the rear terminals MAIN OUTPUT (7) with a sufciently thick cable for checking
the current control (at least 8 mm
2
). Check the entire setting for proper operation.
If this remote control function is no longer required, put the selection switch MODE (8) to the Normal
position.
58
d) Remote-control output (on/off)
The DC output can be turned on and off via the a switching contact.
Proceed as follows for connection:
1. Connect the connecting cables of the remote sockets as illustrated.
2. Contact connections 4 and 5 with an isolated switching contact.
3. When the output is turned off, the status displays “C.V.” and “C.C.” (1) will ash. The display will
then show the current settings of the output voltage and the output current (1).
4. When the output is turned off, you can set the output values with the control knobs for voltage
(VOLTAGE) (3) and current limiting (CURRENT) (4).
No voltage must be applied to contacts 4 and 5.
5. Switch off the power unit and then connect the remote socket to the rear
remote connection. Screw on the external fastening ring.
6. Switch on the power unit.
7. Put the selection switch MODE (8) on the rear into the Remote Ctrl
position. The control indicator REAR CONTROL (2) display is lit.
8. If the switching contact is open, the DC output is active; if it is closed,
the DC output is switched off. Check the switching function for correct
function.
9. When the DC output is switched off, “O P OFF” is displayed.
10. If this remote control function is no longer required, put the selection
switch MODE (8) to the Normal position.
59
11. SENSE FUNCTION (1086562)
The sense function is only available with Item No. 1086562.
The sense function is an automatic voltage control for the rear high-current output (MAIN OUTPUT) (7).
For this, two separate measuring cables are connected parallel to the connecting cables. The
potential drop which occurs on the connecting cables is measured on these two measuring cables.
The laboratory power unit automatically compensates for this voltage drop so that the actually set
voltage is supplied to the consumer.
Proceed as follows for connection:
1. Turn off the power supply unit and the consumer.
2. Always connect the supply cables from the power unit to the consumer rst. Pay attention to
correct polarity.
3. Press the clamp release on the rear terminals SENSE (14) inwards with a small screwdriver and
insert the cables into the terminal openings. Check that they are plugged rmly.
4. Now connect the two sense cables to the consumer observing the correct polarity. The conductor
cross-section for the sense cables must be at least 0.34 mm
2
.
5. Always slacken the connection in the reverse order (rst of all sense cables and then the
connecting cables).
1086562
Make sure that you contact the sense cables as close as possible to the connecting
point of the consumer. Observe correct polarity.
Never short-circuit the sense cables.
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VOLTCRAFT DPPS-60-8 Operating Instructions Manual

Type
Operating Instructions Manual

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